Machinery for skiving leather



v M'.,M. GLOUGH. Machinery for Skiving Leather.

No. 227,347. Patenjteg y n y H, 1880.

Inveniar. I Morbn M Clo N-PETERS, PHOWLITNOGRAPHER. WASNXNGTON. D. C-

UNITED STATES PATENT OFFICE.

MORTON M. OLOUGH, OF MARLBOROUGH, MASSACHUSETTS.

MACHINERY FOR SKIVING LEATHER.

SPECIFICATION forming part of Letters Patent No. 227,347, dated May 11, 1880. Application filed January 5, 1880.

To all whom it may concern:

Be it known that I, MORTON M. GLOUGH, of Marlborough, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Machinery for Skiving Leather; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a top view, Fig. 2 a front-end elevation, and Fig. 3 a front-side elevation, of a machine containingmy invention. Fig. 4is a vertical section taken through the bed and the adjustable feed-wheel. Fig. 5 is a longitudinal section of the feed-wheel, its carrier, and the socketed supporter of the latter and sundry parts adjacent thereto, to be hereinafter described.

The nature of my invention is defined in or by the claims hereinafter presented.

In this machine for feeding the leather to theknife I employover the bed an automatically-adjustable toothed wheel or feeding-gear and a driving-gear to engage with and revolve the first-named gear, the feeding-gear being adapted to move toward and away from the bed in a direction oblique thereto, as hereinafter explained.

The feeding-wheel is represented at A and the bed at B, such bed being sustained by an adjustable arm, 0, projecting from the frame D, for supporting the main working parts of the machine. The said frame carries a driving-shaft, E, provided at one end with a driving-pulley, F, and at the other with a gear, G, to engage with the feed-wheel, which, with the said gear, are what are usually termed spiraltooth gears, each of their teeth standing obliquely to each end of the gear, in manner as shown.

The feed-wheel is supported in a movable furcated carrier, I, arranged to move rectilinearly in a socketed piece, K, fastened to the frame. Within the said socket piece is a spring, a, to force the feeder-carrier downward toward the bed. There is also in the said socket-piece a pressure regulator or rod, b, which rests against the upper end of the spring a, and is adapted to slide lengthwise in the socket-pieceK, which is furnished with a clam pscrew, 0, to screw into it and against the said slide-rod. The slide-rod b and the clamp-screw c serve to regulate or increase or diminish, as occasion may require, thedown ward pressure of the spring. Furthermore, it will be seen that the feed-wheel carrier and its socket are oblique to the bed, or inclined at angle of about sixty degrees thereto, and that within the said angle, and in advance of the feed-wheel, the skivingknife L is arranged, as shown, such knife bein g supported by mechanism which consists of a rotary fureated arm and clamping-screws, and a rotary knife carrier and clampingscrews, all being constructed and adapted to the knife and to the sustaining-frame, substantially as represented in Letters Patent N 0. 218,163, and constituting the subject of the fourth claim thereof.

In the drawings the said rotary furcated arm is shown at M, and the rotary knife-can rier connected thereto is represented at N. With these appliances and the knife I now employ a screw, 0, which screws up through the bed-supporting arm and against the knife. By means of this screw a finer or easier adjustment of the knife relatively to the bed can be obtained than without it.

There extends from the feed-wheel carrier, through a slot, d, in its support-piece, a stud, e, which projects into an adjustable stirrup, f, arranged against the front of the said supportpiece and held thereto by a clamp-screw, g, which goes through the upper of two slots, h t, in the stirrup, and screws into the socketed support-piece K, the stud before mentioned entering the lower slot. By means of the stirrupf, the stud e, and the clamp-screw g, the extent of downward movement of the feedwheel relatively to the bed for different thicknesses of leather to bc skived may be determined and the feed-wheel 'be prevented from revolving in contact with the bed.

In order to prevent the piece of leather re moved by the knife from curling up and clogging the feed-wheel there is a thin plate or deflector, P, fixed to the feed-wheel carrier and arranged to extend down over the knife, or between it and the feed-wheel, in manner as re presented. Against the rear end of the feedwheel and over the bed, and entirely separate therefrom, is the guide R, against which the inner edge of the leather is borne while the piece is being skived. The said guide is supported by the frame rather than by the bed or its sustaining-arm, for the reason that it is very desirable to have the guide as close to the feed-wheel as possible without bearing against it to impede it in its movement, it having been found in practice that when the guide is supported by the bed or its sustaining-arm such guide,

by the springing of the bed downward during the skiving of a piece of leather, has been or was liable to be forced against the feedwheel a matter which is avoided by having the guide separate from the bed and supported so that the latter can spring down without moving the guide correspondingly. There projects upward from the guide R a small horn or curved arm, S, arranged as shown, it being to keep the leather while being drawn into the machine from curling up against the drivinggear, and it also aids in guiding the leather.

In using the machine the piece of leather to be skived is to be laid upon the bed and against the guide and moved forward until seized by the feed-wheel, which will advance it to the knife. The object of having the feed wheel driven by a separate gear engaging with it, as described, is to keep the spaces between the teeth of the feed-Wheel from becoming clogged by small pieces of leather or extraneous matters, the driving gear serving not only to revolve the feed-wheel, but as a clearer to remove from it any such obstructions as mentioned.

Again, the object of using spiral-tooth gears instead of common spur-gears to effect the feedin g of the piece of leather to be skived is that the feeding-gear has always at least two teeth in contact at the same time with the leather and as a consequence the hold of the feedwheel upon the leather is greatly increased to what it would be at times were an ordinary spur-gear used as a feeder.

By having the feed-wheel carrier more obliquely to the bed in rising upward the feedwheel is caused to operate to better advantage with the knife than it would were its carrier to play perpendicularly or at right angles to the bed.

The spring of the feed-wheel carrier enables the feed-wheel to automatically adjustitself to the pieces of leather to be skived as they may vary in thickness.

What 1 claim as my invention is as follows:

1. For feeding the leather to the knife, the combination of the automatically-adjustable feeding-gear A with the driving-gear G thereof and the bed B, such driving-gear being provided with means of revolving, as described.

2. Thecombinatiop of the bed B and the driving-gear G with the automatically-adjustable feeding-gearA and mechanism for supporting it and causing it, while in movement up or down, to move obliquely to the bed and relatively to the knife, as set forth.

3. The combination of the adjustable stirrup f and its clamp-screw g with the feeding-gear carrier 1, its stud e and operative spring a, and supporting socket-piece K, all being arranged substantially as described.

4. The pressure-regulator b and its clampscrew c,-arranged and combined, as setforth, with the adjustable carrier 1, its spring a, and supporting socket-piece K.

5. The combination of the deflector P with the feed-wheel A, its carrier I, and the knife L and bed B, to operate as and for the purpose specified.

6. The combination of the screw 0, arranged in the bed-supporting arm, with the bed B and with the knife L, provided with mechanism for adjusting it relatively to the bed, as set forth.

7. The combination of the auxiliary guide S with the feed and driving gears A G, the main guide R, and the bed B, all being arranged as set forth.

MOBTON M. OLOUGH.

Witnesses:

R. H. EDDY, S. N. PIPER. 

